Navien Error Code Operation State: Status Information item 1 – Operation State (Boiler)
Navien error code Operation State on a boiler means: Status Information item 1 - Operation State. It is also called Navien diagnostic code Operation State.
Homeowner? What Navien code Operation State means for you
Usually minor Your boiler is reporting: Status Information item 1 - Operation State. This code is usually informational or minor. The safe checks below often clear it; call us if it keeps showing up.
Safe things you can check yourself
- Check the thermostat: right mode (Heat or Cool), set a few degrees past room temperature, and fresh batteries if it uses them.
- Make sure the unit has power: its on/off switch (often looks like a light switch near the unit) is ON and the breaker in the electrical panel is not tripped.
- Look at the pressure gauge on the boiler. If it reads much lower than usual or near zero, or water is leaking, call a technician.
- Outside, make sure the intake and exhaust pipes or vent cap are not blocked by snow, ice, leaves or a nest.
- Check that the boiler gas valve is open (handle in line with the pipe).
- Try one reset: turn the power off for 30 seconds, then back on. If the code comes back, stop resetting and call a technician.
Call (647) 657-2977Book a service call
Licensed technicians serving Vaughan, Toronto and the GTA.
What does Navien error code Operation State mean?
Current operation state of the boiler. Read-only item 1 in the Status Information menu.
Applies to: NHB-055H, NHB-080H, NHB-110H, NHB-150H
Navien models that use code Operation State
NHB-055HNHB-080HNHB-110HNHB-150H
Other Navien Boiler codes
All Navien Boiler error codes →
Navien code Operation State: homeowner questions
What does Navien code Operation State mean?
Status Information item 1 - Operation State. Current operation state of the boiler. Read-only item 1 in the Status Information menu.
Is it safe to keep using my boiler with code Operation State?
Usually yes. Code Operation State is normally minor, but if it keeps coming back have it checked.
Can I reset Navien code Operation State myself?
You can try one reset (power off for 30 seconds, then on). If Navien code Operation State comes back, the cause is still there and a licensed technician should check it.
Who can fix Navien code Operation State near me?
Aurora Star Tech Inc. repairs Navien boilers in Vaughan, Toronto and across the GTA. Call (647) 657-2977 or book a service call online.
Homeowner help: Boiler Not Heating: What to Check
Troubleshooting guides
- Condensing/corrosion of conventional boiler All brands · Boiler
- No heat or some zones cold All brands · Boiler
- Noise All brands · Boiler
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- Relief valve weeps every cycle / pressure climbs All brands · Boiler
- Short cycling / wasted fuel All brands · Boiler
- Symptoms of air in system All brands · Boiler
- Uneven heating All brands · Boiler
- Won't fire All brands · Boiler
- Annual service checklist - Navien NHB-H Navien · Boiler
- Change gas type with DIP switch 2 Navien · Boiler
- Change installer parameters (password 1234) Navien · Boiler
- Check input and output states (Input/Output Status) Navien · Boiler
- Force a fixed firing rate with DIP switch 1 Navien · Boiler
- Force minimum or maximum firing (special operations) Navien · Boiler
- No space heat - Navien NHB-H / NFB-H Navien · Boiler
- Open the service / installer menu (Back + Menu) Navien · Boiler
- Purge air from the heating or DHW piping (Air Purge Mode) Navien · Boiler
- Read live data (Status Information menu) Navien · Boiler
- Read the error history Navien · Boiler
- Relief valve discharging - Navien NHB-H / NFB-H Navien · Boiler
- Remove a cascade (Cascade System Removal) Navien · Boiler
- Reset one parameter to its default Navien · Boiler
- Run test mode (fan, pumps, zone valves, venturi) Navien · Boiler
- Set the altitude with DIP switch 2 Navien · Boiler
- Set up a cascade (assign sub unit IDs) Navien · Boiler
Source: Navien NHB-H User's Information Manual (V1.0 Apr 2024), 3.3, p.13-14; Navien NHB-H Installation and Operation Manual, 11.7, p.103-104. Written in our own words as a summary; always check the original manual.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.